Step5: SW5 and SW2 are closed(SW5-POSITIVE and SW2-GROUND).This makes the winding w3 and w1 inside the motor energized and making the motor complete step. Step4: SW3 and SW2 are closed(SW3-POSITIVE and SW2-GROUND).This makes the winding w2 and w1 inside the motor energized and making the motor complete step. Step3: SW3 and SW6are closed(SW3-POSITIVE and SW6-GROUND).This makes the winding w2 and w3 inside the motor energized and making the motor complete step. Step2: SW1 and SW6 are closed(SW1-POSITIVE and SW6-GROUND).This makes the winding w1 and w3 inside the motor energized and making the motor complete step. Step1: SW1 and SW4 are closed(SW1-POSITIVE and SW4-GROUND).This makes the winding w1 and w2 inside the motor energized and making the motor complete step. The step by step driving of switches goes as below. The circuit connected to three phases of MOTOR as shown in above circuit. In the circuit we have six switches forming H-BRIDGE. We need to follow a certain pattern of powering the three phases of the motor to make it running.įor forward direction we need to follow the below table: (R, Y, B) OR (A, B, C)įor reverse direction we need to go as STEP6, STEP5…STEP1 in the above table.įor realizing the above tables consider the simple circuit shown below. It is not like normal DC motor where you can plug the motor directly to power to make it rotate. This motor efficiency is good considering its purchase cost.Īs mentioned earlier, the motor is three phase driven and controlling it not easy. Efficiency is also one of reasons for choosing this motor.
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